Why were electrons chosen to be negatively charged? Wouldn’t it make more sense to call electrons positively charged

Question: Why were electrons chosen to be negatively charged? Wouldn't it make more sense to call electrons positively charged because when they move they make electricity?
- Keywords:
  charge,
  electron,
  physics
Asked by anon-225816 to Sameed, Jose, joannabarstow, Heidi, Chris on 21 Nov 2019.
- Sameed Muhammed answered on 21 Nov 2019:
  
  Yes, the choice of saying that an electron is negatively charged is just a matter of convention. Unfortunately, people discovered electric current before electrons were discovered. When it was found that electrons moved in the opposite direction to positive electric current, they have to assign the negative charge to the electron. The rest is history.

Question: Why were electrons chosen to be negatively charged? Wouldn't it make more sense to call electrons positively charged because when they move they make electricity?